Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b37569d98487446…

MALICIOUS

PDF

38.8 KB Created: 2020-08-18 21:26:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2fb792fd736daea51cb0f61d19c3492c SHA-1: 63c463c6ab2bb991af57321e448690760c51cd03 SHA-256: 2b37569d984874461924bd9df5bdf28589e9772a9840eeb7e06e99857e8e208d
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a malicious redirector link and a large number of external links, suggesting a link farm or redirection tactic. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates the document is designed to trick the user into downloading a password-protected archive, a common method to bypass gateway security. The embedded URL 'https://ttraff.cc/pify?keyword=friends+song+music+ringtone' is flagged as malicious and likely serves as the initial lure.

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=friends+song+music+ringtone
    • http://files.gcspatriots.org/uploads/1/3/1/4/131453588/7f5d484.pdf
    • http://files.lovebugny.com/uploads/1/3/1/4/131453026/32f1a63153be.pdf
    • https://cdn.shopify.com/s/files/1/0427/9340/2534/files/towapefebe.pdf
    • https://cdn.shopify.com/s/files/1/0433/0625/4494/files/paletefarigibum.pdf
    • https://cdn.shopify.com/s/files/1/0431/5011/4965/files/atomic_number_table.pdf
    • https://cdn.shopify.com/s/files/1/0440/3704/6437/files/chalkboard_template_5x7.pdf
    • https://cdn.shopify.com/s/files/1/0435/4929/4756/files/invacare_platinum_xl_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/fenegikusononaxusipaweku.pdf
    • https://cdn.shopify.com/s/files/1/0427/8213/0332/files/vegezexa.pdf
    • https://cdn.shopify.com/s/files/1/0434/3732/6502/files/annexure_1_pdf_form.pdf
    • https://cdn.shopify.com/s/files/1/0436/9760/2713/files/bardale_forensic_medicine_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/8184/3356/files/47037552677.pdf
    • https://cdn.shopify.com/s/files/1/0439/1229/8648/files/business_agreement_format.pdf
    • https://cdn.shopify.com/s/files/1/0434/2077/8653/files/mibexomapinatevax.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005bcb.bin
7a25bea0c9841329d749c8f3f53d858af38014b24e1e69f8011923b3232cf8ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BCB 4972 bytes
font_01_sfnt_off00006c9a.bin
affadd50ca73ae11175f434e1f3ab27ba1a58ed50d151f9bc70a16323a2de42e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C9A 9916 bytes

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